The Advent Catapult is a facility in the Quire System, made and used by the Advent Group in order to move cargo and people out of the Mirage.
Grand Magnificent was transported here by Advent, after he delivered a package for them on the Restitution of All Things.[1]
The catapult was rendered temporarily unable to fulfil its purpose after the Rapid Evening arrived in the Quire System and began to enforce a blockade.[2]